With a stunning move into Turn 1, Ross Chastain snatched the lead from William Byron with six laps remaining and hung on to win the Coca-Cola 600.
Chastain split the middle between Byron and Hamlin to earn his first Cup Series victory since last September. The Trackhouse Racing driver led only eight laps, including the final seven at Charlotte Motor Speedway.
Byron lost by 0.673 seconds despite leading a race-high 283 of 400 laps and winning all three stages.
Pole-sitter Chase Briscoe finished third, followed by A.J. Allmendinger and Brad Keselowski.
Denny Hamlin led 53 laps while trading the lead 15 times with Byron, but his No.